Improvement in telegraphic cables



J. MORGAN, A. T. JAY, E. EDWARDS &- J. TILSTON. TBLEGRAPHIO CABLE.

No. 34,862. Patented Apr. 1, 1862.

Inventgi/ .f miiwssea 7 7727mm: a 4 WML m.

I M I UNITED STATES PATENT OFFICE.-

- JOHN MORGAN, ,ALFRED THOMAS JAY, EDMUND EDWARDS, AND, JOSEPH TILSTON, OF LONDON, COUNTY OF MIDDLESEX, ENGLAND.

--IMPROVEMENT IN TELEGRAPHIC CABLES;

Specification forming part of Letters Patent No. 34,862, dated April 1, 1862.

To all whom it may concern.

Be it known that we, J OHN MORGAN, AL- FRED THOMAS JAY, EDMUND EDWARDS, and JOSEPH TlLsToN, all of London, in the county of Middlesex, in'that part of the United Kingdom of Great Britain and Ireland, known as England, have invented certain new and useful Improvementsin Ropes or Cables for Submarine or other Electric Telegraphs, and for the Rigging of Ships, and for other purposes; and we'do hereby declare thatthe followingis a full, clear, andexact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which- 7 Figure l is a longitudinal view of aportion of an electric-telegraph cable constructed according to our invention. Fig 2 isatrans verse section of the same.

Similar letters of reference indicate corresponding parts in both figures. I

This invention consists in the arrangement of a spiral coil of wire or ribbon, A, composed of iron or other metal within acovering oi rope, B, composed of vegetable fiber, metallic wires, or metallic ribbons in such amanner that the stretch of the rope longitudinally is prevented by the resistance of the internal coiled wire to a transverse strain.

In electric-telegraph cables for submarine and other purposes we take a conducting ribbon or wire, 0, of copper or other metal,

Q coiled spirally in such a manner as to allowit to stretch longitudinally to a considerable ex.-

' tent'without fracture, and we insulate this ribbon'or wire by surrounding it with one or ribbon or wire thus insulated within the smear metallic wire covered by the rope of vegetable fiber, metallic wires, or metallicribbons above described. The insulated conducting ribbon or' wire 0 is thus prevented from injury through any transverse strain by the spiral coil of wire A which surrounds it while the greater part of any longitudinal strain isborne by the'rope B, of vegetable fiber, metallic wires, or metallic ribbons whichsurroundthe coilot' spiral wire, and the combination of parts described allows great flexibility in the cable.

For the rigging of ships or other purposes where greatlongitudinal strength is required in the rope without stretching, we use the cable as above described, omitting the internal conducting ribbon or wire, insulated with pure india-rubbe r or other insulating material.

What we claim as our invention, and desire to secure by Letters Patent, is-- The arrangement of a spiral coil of wire or metal ribbon, A, within a covering of rope, B, substantially as and for the purpose herein specified.- t

JOHN MORGAN. ALFRED THOMAS JAY. EDMUND EDWARDS.

. JOSEPH TILSTON. Witnesses:

JAMES DAISH,

53 Chancery Lane, N. (1., London.- STE. CHAS. BAZRABE,

2 Popcs Head Alley, Comhill. 

